add tags render
fix the parser: use the lineno
add summary attr to post
add summary attr, but use the cuthtmlstring module
add requirement for cuthtmlstring
use markdown ! its ok !!!
Merge branch 'dev'

* dev:
  use markdown ! its ok !!!
  add requirement for cuthtmlstring
  add summary attr, but use the cuthtmlstring module
  add summary attr to post
  fix the parser: use the lineno
  add tags render